电阻法测量红细胞流变特性的理论探讨

THEORETICAL RESEARCH ON MEASUREMENT OF RBC RHEOLOGY BEHAVIOUR WITH IMPEDANCE METHOD

作者在以前研制成功的电导法测定红细胞变形性以及聚集——沉降仪器的基础上改进了测量仪器。从Fricke—Velick 悬浮液电导理论出发,对该仪器测得的结果进行了理论上的探讨,并证明所测得的△Z/Z—γ曲线反映了红细胞在切变流场中由随机状态变为沿切变流场的取向与变形,并取得了理论与实验结果的一致,为电阻抗法测定红细胞流变特性奠定了理论基础。

Based on electrical conductivity method developed by the authors for the measurement of RBC ceformability,the prototype of the instrument has been improved by replacing two ring platinum with four silver ring electrodes. By means of Fricke -Velick' s electrical conductivity, theory of RBC suspension, the results obtained from experiments were discussed theoretically and showed that △Z/Z0 -(?) curve reflects RBC orientation process from random to the direction and cleformability in shear flow field. Theoretical results consist with experiments well and provide a theoretical basis for the measurement of RBC rheology behaviour with impedance method.